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Harold Baker was also found guilty of two counts of attempted murder and four counts of use of a deadly weapon to commit a felony.

"This level of violence is extreme and it's very shocking that it would happen in our community," prosecutor Jim Masteller said.

Investigators said Baker shot and killed Derek Johnson, 27, and Jermaine Richey, 28, with an AR-15 rifle in December 2014.

Police said there were 30 .223-caliber shell casings at the scene near 30th and Ames, and the entire incident was captured on nearby security cameras.

"It was plain as day that he was, you know, the killer," said Porscha Franklin, Richey's fiancee.

Franklin, the mother of Richey's children, watched the video in court. She said it was tough and sickening. However, she and Richey's sister, Christina, said that justice has been brought and it means Baker will have to pay for the crime.

"He don't feel nothing in his heart," Christina Richey said. "No kind of sadness in his heart. So he deserves whatever comes to him. He deserves everything."

Masteller said this kind of video is rare, but makes a difference in cases.

"That's not the end of the investigation," he said. "That's merely the beginning. It's so important for people to come forward and share what they know and what they saw and that's what happened in this case."